Muppet Mentions

In the season one episode "The Rhodes Not Taken," some glee club members are wondering about Quinn Fabray's odd behavior. Puck butts in, "Are you all that stupid? Seriously? I bet you thought Bert and Ernie were just roommates."

In the season one episode "Bad Reputation," the glee club members are trying to improve their image. After failing to make themselves appear bad-ass, Kurt admits "We're as menacing as Muppet Babies."

In the season one episode "Theatricality," the girls in the glee club dress in various styles after Lady Gaga. Rachel wears a dress with stuffed animals stapled to it. Mercedes says, "I think it's the Kermit the Frog look." She's referring to Lady Gaga's dress made of Kermit plush dolls worn as a statement against wearing fur.

In the season two episode "Furt," Santana fixes Finn's tie in a church nursery with pictures of Cookie Monster and Big Bird on the wall. Earlier in the episode, Sue Sylvester offers Kurt the following nicknames to pick from: "Gelfling, Porcelain or Tickle-Me-Doughface." He picks the middle one.

In the season two episode "A Very Glee Christmas," members of the faculty discover that Sue has rigged the Secret Santa. In retaliation, Sue kicks them out of her office and refers to Emma as Elmo.

In the season three episode "I Am Unicorn," Coach Bieste carries Artie (who is wheelchair-bound) to a chair. Artie whispers to Emma, "She's like my own private Jim Henson."

In the season three episode "Pot O' Gold," Irish character Rory Flanagan performs "Bein' Green."

In the season three episode "Extraordinary Merry Christmas," Sue again called Kurt a "Gelfling."

In the season four finale episode "All or Nothing," competing glee club The Waffletoots (played by the Whiffenpoofs, Yale's all-male glee club) performs "Rainbow Connection" at Regionals. (YouTube)